Been my experience that you have the core set of skills to provide emergency repair, and maintenance. With that said, you will be more than busy, and achieve self satisfaction with maintance, and modifications you employ as you embark on your sail journey.
Been my experience that the sooooooo much engineering, has already gone into the design of a sailboat model, you would be much better off to research the size and model of sailboat you are looking for, and leverage this baseline for your modifications and enhancements. Why waist time to re-invent the wheel, when you can leverage an respectable sailboat into the dream ship you are looking for.
Have fun... You are on the right track of life; you know yourself, now find the sailboat that matches your base needs, and run with it...